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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Uma incursão pela abordagem de pesquisa em contabilidade no Brasil fundamentada em teorias semióticas e da comunicação / A survey of Brazilian accounting research based on semiotics and communication theory

Fernando Henrique Camara Gouveia 27 October 2010 (has links)
Quando tratada como a linguagem dos negócios, a Contabilidade é tida como um sistema de códigos que permite a comunicação entre a administração da empresa e os usuários reais ou potenciais das informações geradas pela primeira. Essa proposta torna-se ainda mais relevante quando tanto a doutrina como os órgãos regulamentadores apontam que comunicar é posto como o próprio objetivo da Contabilidade. A Contabilidade também é reconhecida como uma manifestação linguística por apresentar aspectos em comum com outras linguagens. Dentro desse contexto, diversos estudos propõem a utilização de teorias semióticas e da comunicação para a realização de pesquisas contábeis, não apenas com relação às informações numéricas das demonstrações financeiras, mas também a terminologia, os textos, gráficos e imagens utilizados nessas demonstrações e em outras narrativas que compõem o disclosure de uma entidade. Estudos empíricos sobre essa abordagem são encontrados desde a década de 1970 no exterior, e há pelo menos uma década de forma mais frequente no Brasil. Sendo assim, este trabalho teve como objetivo realizar um review de trabalhos publicados em periódicos, congressos brasileiros e teses e dissertações defendidas em programas de pós-graduação avaliados pela Capes para responder ao seguinte problema de pesquisa: Qual o estado da arte da pesquisa em Contabilidade no Brasil fundamentada em teorias Semióticas e da Comunicação? Foram coletados 22 trabalhos, num total de 18 inéditos, que foram segregados em seis categorias, conforme o problema de pesquisa proposto: teórico, compreensão de termos técnicos, evolução de significados, compreensibilidade de relatórios, fidelidade de representação e influência no preço das ações. Os trabalhos teóricos sugerem a utilização de teorias semióticas e da comunicação para investigar se a Contabilidade atinge seus objetivos. Geralmente, tais trabalhos tratam da compreensibilidade associada ao nível de sofisticação do usuário e da fidelidade de representação associada à relevância da informação. Os trabalhos empíricos encontraram evidências de que os usuários não compreendem alguns termos utilizados nos relatórios contábeis, ou têm concepções diferentes acerca deles, que as narrativas contábeis podem ser consideradas de difícil leitura e que o repertório e a formação dos usuários das demonstrações contábeis afetam a compreensibilidade, que há presença de gerenciamento de impressões na forma como os relatórios narrativos são elaborados e que o pessimismo das narrativas contábeis influencia o valor de mercado das empresas. Também foi constatada a importância da evolução histórica da utilização de um termo ou expressão para se entender o conceito ou significado que a sociedade atribui a ele. No que concerne às metodologias utilizadas, observou-se uma grande variedade de recursos inferenciais estatísticos empregados para abordar os problemas de pesquisa. As técnicas mais utilizadas foram o questionário e a análise de conteúdo (temática e sintática) muitas vezes em conjunto com técnicas de inferência estatística. Os trabalhos teóricos são os que mais fizeram referências às teorias semiótica e da comunicação, entretanto os trabalhos empíricos não tratam necessariamente dessas teorias, apesar de frequentemente abordarem a contabilidade como uma forma de linguagem, ou como importante para o processo de comunicação da administração com os usuários. Por fim, foram sugeridos alguns direcionadores para as pesquisas nacionais. As possibilidades de pesquisas têm o potencial de serem ampliadas, seja pela variedade de narrativas contábeis passíveis de investigação, seja pelo objeto de estudo, que não necessariamente deve recair sobre as narrativas, seja pela perspectiva sobre a qual o objeto de estudo é pesquisado. Há também a possibilidade de explorar melhor o arcabouço teórico das ciências semióticas e da comunicação, que parece ser subutilizado em alguns estudos. / Approached as business language, Accounting is considered a code system which allows communication between company administration and the actual or potential users of the information generated by the first. This proposition becomes more relevant when both the doctrine and regulation organs point out that communicating is itself the purpose of Accounting. Accounting is also recognized as a linguistic manifestation as it presents common aspects with other languages. Inserted in this context, several studies propose the use of semiotic and communication theories to accomplish accounting research, considering not only numeric information of financial statements but also terminology, texts, graphs and images employed in these demonstrations and in other narratives that compound the disclosure of a corporation. There have been empirical studies on this approach since the 1970s, and research on this field has been done frequently in Brazil at least for a decade. Thus, this work aims to accomplish a review of articles published in journals, Brazilian congresses, theses and dissertations presented in graduation programs evaluated by Capes to answer the following question: what is the state-of-art of Accounting research in Brazil based upon semiotic and communication theories? Twenty-two works have been collected, among these eighteen unpublished works, which have been divided into six categories, according to the research problem in focus, being them: theoretical, technical terminology comprehension, meaning evolution, reports understandability, faithful representation and influence on stock prices. Theoretical works suggest the use of semiotic and communication concepts to investigate if Accounting reaches its aims. Such works generally study comprehensibility associated with the level of sophistication of users and faithful representation linked to information relevance. Empirical works found evidence that users do not comprehend some terms employed on accounting reports, or still hold different conceptions about them. In addition accounting narratives can be considered difficult to read and knowledge and schooling of users affect the comprehensibility. Also, there are evidences of manipulation on the way narrative reports are elaborated and pessimism in accounting narratives influence the market value of companies. It has also been identified the significance of historical evolution of a term or expression to understand the concept or meaning that society applies to it. Concerning the methodology employed, there has been observed a great variety of inferential statistic resources employed to approach the research questioning. Questionnaire and contents analysis (both thematic and syntactic) were the techniques more frequently used, often associated to methods of statistic inference. Theoretical works have more often referred to semiotic and communication theories. However, empirical works do not approach such theories themselves although they do approach Accounting as a language or as somewhat relevant to communication process between administration and users. At last, some guidance to national research has been provided. Possibilities for research have potential to be enlarged, both for the variety of accounting narratives that can be investigated or for the study focus, which may not concentrate on narratives or still for the perspective of the research. There is also the possibility of studying the theoretical framework on semiotic and communication sciences more deeply, which seem to be underutilized in some studies.
12

Coding theorems of quantum information theory : Dissertation zur Erlangung des Doktorgrades, vorgelegt der Fakultät für Mathematik, Universität Bielefeld /

Winter, Andreas. January 1999 (has links)
Thesis (Ph. D.)--Universität Bielefeld, 1999. / "13 April 1999." Postscript file reader required. Includes bibliographical references (p. 72-76) and index.
13

Improvements to Information Flow in the Physician Order Tracking Process

Doudareva, Evgueniia 22 November 2013 (has links)
In an emergency department (ED), information flow is of high value, as the ability to react quickly directly affects the patients’ well being. One of the gaps in the information flow is in the order tracking process. This paper focuses on modelling the feedback in this process from the order being issued until it has been fulfilled. We address this problem using discrete-event simulation. Additionally, we use the mathematical theory of communication to evaluate the information con- tent in the current and proposed systems. We perform computational tests on these models to compare their performance. Experimental results show that the problem can be effectively modelled using our approach and the effects of feedback on the physician decision-making can be better understood. The results indicate that additions of as little as one point of feedback have practically significant effects on the amount of time that an order spends in the system.
14

Improvements to Information Flow in the Physician Order Tracking Process

Doudareva, Evgueniia 22 November 2013 (has links)
In an emergency department (ED), information flow is of high value, as the ability to react quickly directly affects the patients’ well being. One of the gaps in the information flow is in the order tracking process. This paper focuses on modelling the feedback in this process from the order being issued until it has been fulfilled. We address this problem using discrete-event simulation. Additionally, we use the mathematical theory of communication to evaluate the information con- tent in the current and proposed systems. We perform computational tests on these models to compare their performance. Experimental results show that the problem can be effectively modelled using our approach and the effects of feedback on the physician decision-making can be better understood. The results indicate that additions of as little as one point of feedback have practically significant effects on the amount of time that an order spends in the system.
15

Application of error correction codes in wireless sensor networks /

Shen, Bingxin, January 2007 (has links) (PDF)
Thesis (M.S.) in Electrical Engineering--University of Maine, 2007. / Includes vita. Includes bibliographical references (leaves 62-68).
16

Wideband extension of narrowband speech for enhancement and coding /

Epps, Julien. January 2000 (has links)
Thesis (Ph. D.)--University of New South Wales, 2000. / Online copy varies slightly. Also available online.
17

A high performance ATM switch architecture

Chen, Hong Xu. January 2007 (has links)
Thesis (Ph.D) - Swinburne University of Technology, Faculty of Information & Communication Technologies, 2006. / A thesis submitted for the degree of Doctor of Philosophy, Faculty of Information and Communication Technologies, Swinburne University of Technology, 2006. Typescript. Bibliography p. ?? Includes bibliographical references (p. 135-142).
18

Performance analysis of maximal-ratio combining and space-time block codes with transmit-antenna selection over nakagami-m fading channels

Chi, Zhanjiang. January 2007 (has links)
Thesis (M.E. (Res.))--University of Sydney, 2007. / Title from title screen (viewed April 1, 2008). Submitted in fulfilment of the requirements for the degree of Master of Engineering (Research) to the School of Electrical and Information Engineering. Includes bibliographical references. Also available in print form.
19

Simplified iterative noncoherent demodulation and decoding of encoded M-DPSK signals over Rayleigh flat-fading channels /

Fernando, Ronald S. January 1900 (has links)
Thesis (M. App. Sc.)--Carleton University, 2001. / Includes bibliographical references (p. 54-56). Also available in electronic format on the Internet.
20

Network coding for multi-user wireless networks /

Nguyen, Dong Van. January 1900 (has links)
Thesis (Ph. D.)--Oregon State University, 2010. / Printout. Includes bibliographical references (leaves 143-149). Also available on the World Wide Web.

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